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6. magnetic flux (Wb) is the area at right angles to flux

  • True
  • False

7. which is used at a point?

  • E=Qk/r squared
  • F=Qqk/r squared

8. if a current flows ACROSS a magnetic field...

  • nothing changes
  • the two fields produce a force
  • the two fields are cancelled out

9. electromagnetic induction...

  • inducing an e.m.f using a magnetic field and a changing flux linkage
  • inducing an e.m.f using an electric field

10. flux linkage is the magnetic flux and the turns of coils

  • True
  • False

11. faradays law

  • magnitude of the induced e.m.f is equal to the rate of change of flux linkage
  • magnitide of the induced e.m.f is proportional to the number of coils

12. lenzs law is the direction of an induced current is opposite to the flux change across it

  • True
  • False